Abstract

This paper proposes a coordinated market mechanism for implementing an economic dispatch problem for active distribution grids. It is assumed that Distributed Generators (DGs) are operating in the distribution grid and offer dispatchable active and reactive power to the Distribution System Operator (DSO). The DSO economically dispatches its local DGs and transmission grid supply, while managing distribution grid voltages, losses and congestion. The main features of the proposed iterative method is that it i) deploys adequate power flow representation, ii) preserves the respective sensitive information of DGs/DSO and iii) maintains computational inexpensiveness at each iteration. The method is tested with two scenarios on 33-bus system, where it is shown to converge to the same solution as the central economic dispatch problem.

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